Validity and reliability of the Dynamic Gait Index in children with hemiplegic cerebral palsy.

•Dynamic Gait Index differed between hemiplegic CP and typically developing children.•Dynamic Gait Index is a valid and reliable method for hemiplegic CP.•Dynamic Gait Index significantly differed between GMFCS level I and II in CP group.•Dynamic Gait Index can be used to measure the experience of gait and balancein CP.